'Oil' in the Bible

From the sole of the foot even to the headThere is nothing healthy in the nation’s body,Only bruises, welts, and raw wounds,Not pressed out or bandaged,Nor softened with oil [as a remedy].

They set the table [for the doomed banquet], they spread out the cloth, they eat, they drink;“Rise up, captains [of Belshazzar’s court], oil your shields [for battle, for your enemy is at the gates]!”

“You have gone to the king [of a pagan land] with oilAnd increased your perfumes;You have sent your messengers a great distanceAnd made them go down to Sheol (the realm of the dead).

To grant to those who mourn in Zion the following:To give them a turban instead of dust [on their heads, a sign of mourning],The oil of joy instead of mourning,The garment [expressive] of praise instead of a disheartened spirit.So they will be called the trees of righteousness [strong and magnificent, distinguished for integrity, justice, and right standing with God],The planting of the Lord, that He may be glorified.